Site Overview January 2018 1 Site Overview January 2018 2 Summary - - PowerPoint PPT Presentation

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Site Overview – January 2018

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Site Overview – January 2018

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• Excavation to Basement level -2

completed

• Precast beams fabrication for

basement level -2 completed and installation progressed at 80%

• Basement level -1 lattice plank slabs
• ngoing
• Basement level -2 lattice plank slabs

started

• Basement level -2 columns

reinforcement fixing completed.

Summary Update Oct ‘17 - Dec ‘17

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Look Ahead Jan ‘18 – Mar ‘18

• Precast beams installation and

connection to columns at basement level -2 to be completed

• Columns and structural main walls

to be poured

• Lattice plank slab floors to be

completed at basement level -2

• Continue excavation to basement

level -4

• Demolition of sacrificial tunnels
• Headwall timber heading & SCL

works

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Look Ahead Jan ‘18 – Mar ‘18

Cross Passage 2 –

• approx 25m below

Heyford Avenue.

• Linking the TBM tunnels.
• Needed for fire escape

and emergency access between tunnels.

• Work method involved

hand mining to excavate the London clay.

• Highly unlikely to cause

any disturbance at the surface.

• Starting mid February for

3months

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• Logistics. Vehicle Movements

October 17 to March 18

• Principal vehicle movements related to :
• Muck away operations
• Concrete, rebar and precast beams deliveries

Vehicle movements

Oct-17 1550 Nov-17 740 Dec-17 280 Jan-18 800 Feb-18 2200 Mar-18 1500

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Environmental Monitoring Locations

Noise monitoring stations and sensitive receptors Unattended monitoring position

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Noise Monitoring Oct – Dec 2017

• 1No. exceedance on the 18/11/17 – Continuous usage of the concrete pump throughout the

day and wash out of the pump and lines. Pump located adjacent to monitor.

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Environmental Monitoring Locations

Dust monitoring stations and sensitive receptors

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Monitoring Oct – Dec 2017

Dust slides results – Passive AQ monitoring

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Monitoring Oct – Dec 2017

Site dust monitoring

Note – monitor sent for calibration on 01/12/17

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NE Monitoring Oct – Dec 2017

For the full report consultation please visit the following link: https://tfl.gov.uk/corporate/publications-and-reports/northern-line- extension You will find under the Environmental monitoring reports tab both the “Unattended Noise monitoring reports” and the “Passive air quality monitoring reports”.

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Complaints & Enquiries Summary

• Case Type breakdown

(11 in total):

• 1 x complaint (9%)
• 9 x enquiries (82%)
• 1 x TfL enquiry (9%)
• Cases by Category (11 in

total):

• 2 x Monitoring (18.2%)
• 1 x Noise & Vibration (9.1%)
• 5 x Defect Survey (45.5%)
• 3 x Miscellaneous (27.3%)

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Your Feedback

Feedback Action

Request for information on location of tunnel boring machines Responses sent to those residents who requested the information Noise from lorry drivers when delivering to site Tool box talk given to both traffic marshals and drivers reminding them of good behaviour when visiting site. Road cleaning Road sweepers working daily. Proactive engagement ahead of works Letter drop regarding future works. Changes in working hours and planned activities are communicated in advance.

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NLE Skills and Employment

 Work experience students from local schools and organisations  Year 7 students from Sacred Heart visited on 5th & 6th October for careers event  Visit from Middlesex University Health & Safety students  Work placement from Peabody Trust

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Engagement Opportunities

• CLG meetings
• One to one meetings
• Drop in sessions
• School and Youth Engagement
• Stakeholder Activities – project

wide events. 9/11 Memorial day / sustainability week